Power Door Locks

The power door locks operate:

• From the front door lock switches.
• From the auto (rolling) door lock feature.

  This feature will lock all of the door locks, if all of the doors are closed and the vehicle speed goes above 15 mph (24 km/h).

• From the auto unlock on exit feature.
  • This feature will unlock all of the door locks when the vehicle is stopped, the transmission is in neutral or park and the driver door is opened.
• From the central unlock from the key cylinder feature.
  • This feature will unlock all of the door locks if the operator turns the key cylinder toward the front of the vehicle twice within 5 seconds. The first time the operator turns the key cylinder toward the front of the vehicle the feature will unlock only the driver door lock. If within 5 seconds the operator releases the key cylinder and again turns it toward the front of the vehicle all of the passenger door locks will unlock.
• From the central lock from the key cylinder feature.
  • This feature will lock all of the door locks if the operator turns the key cylinder toward the rear of the vehicle. When either the Driver Door Module (DDM) or the Passenger Door Module (PDM) receives input for a lock request from a door lock switch, RKE (through the BCM), or a cylinder lock switch (only with VTSS), they will turn the lock drivers on for 375 msec. If the request is present beyond 375 msec, the door nodes consider the door lock signal stuck. Once a door lock or unlock signal is stuck for longer than 10 seconds, the appropriate door module will set a trouble code and the signal input is ignored until the stuck condition disappears. The door lock switches provide a variable amount of resistance thereby dropping the voltage of the multiplexed (MUX) circuit and the PDM will respond to that command. The DDM lock switch is a digital input not analog.